Features are things on the surface of the earth that are
represented by lines (arcs), polygons and points.

Arcs represent linear features such as streets, rivers
and railroads. This example displays all three of these linear features.

Polygons represent areas enclosed by specific boundaries,
such as counties, cities, land parcels and police reporting districts. This example
displays the police dispatch districts polygon which is shaded in gray which include
police reporting districts polygons 321 through 325 bounded by the dash/dot arcs in black.

Points represent features found at discrete locations,
such as light poles, sewer manholes, trees, radio towers and also
general locations that have area (such as a building) but which is not displayed as a
polygon. This example displays general locations of two apartment complexes in red
and one nursing home in blue.